AD8398AACPZ-R2

Overview

The AD8398AACPZ-R2 is a single-port VDSL2 line driver with shutdown capability, housed in a 16-lead LFCSP package. It operates from a single 12 V or dual ±6 V supply. Key electrical parameters include an 85 MHz bandwidth at a differential gain of 5, a slew rate of 600 V/µs, and a linear peak output current of 450 mA. The device delivers an 18.4 V p-p differential swing across a 20 Ω load. Power consumption ranges from 33.2 mA in full power mode to 0.7 mA in power-down mode.

Feature Summary

• Integrated four-mode power management via CMOS-compatible PD0 and PD1 control pins
• High-speed voltage feedback architecture optimized for twisted pair line drivers
• Exceptional multitone power ratio (MTPR) performance for xDSL applications
• Thermally enhanced 4 mm × 4 mm LFCSP_WQ package with electrically isolated exposed paddle

Applications

• ADSL2+/VDSL2 Central Office (CO) and Customer Premises Equipment (CPE) line drivers
• Power Line Communication (PLC) line drivers
• Consumer xDSL modems
• General twisted pair line drivers

Procurement Notes

Verify the specific ordering suffix (R2, R7, or RL) against the required reel quantity and packaging format before procurement. Confirm that the RoHS compliant status aligns with current regulatory requirements for the target market. Ensure the thermal design accounts for the junction temperature limits specified in the datasheet to maintain reliability under maximum power dissipation conditions.

Selection Notes

Select this component when high output current and wide differential swing are required for long-reach DSL applications. The integrated power-down modes make it suitable for systems requiring active power management. Ensure the application circuit provides adequate bypassing with low ESR capacitors near the supply pins to minimize ripple and support fast large-signal changes at the outputs.

Part Context

The AD8398A belongs to Analog Devices' portfolio of high-speed analog interface circuits designed for broadband communication infrastructure. It integrates two operational amplifiers configured as a differential line driver. The device is part of the broader family of solutions supporting ADSL2+ and VDSL2 standards, focusing on signal integrity and power efficiency in residential and central office environments.

Replacement Considerations

Public documentation lists the AD8398AACPZ-R7 and AD8398AACPZ-RL as functional equivalents within the same package and temperature range. Verify pin compatibility and thermal characteristics when substituting between these variants.